Chicago : Engineering and Contracting Pub. Co. · leaf 315
oer, with a well worn broom, andthe surface well covered with torpedo sand.Approximately Vz gal. of bitumen is used per!sq. yd. of surface and a cu. yd. of sand willcover approximately 250 sq. yds. making awearing surface about % in. thick. The writer has experimented with various!materials for the… … View of Street at Ann Arbor, Mich. Paved with Concrete with Bitumen Wearing Surface. considerable wear, tried an experiment ofcovering the surface of the pavement with athin layer of hot coal tar and sand. Afterbeing subjected to various conditions of traf-fic for about two years, this thin…
Buildings
Internet Archive · University of Illinois Urbana-Champaign · Public Domain Mark 1.0. Free to use for anything.
